are they nocturnal??? i have had mine about 3 months now and i never see them eat, i do see them but never see them eat. i know they eat cause they are growing quite nicely and are plump but are they nocturnal???
mine was like that as well. I stuck cubes of bloodworms in there to eat he never ate then I woke up in the middle of the night and saw him munchin down if they are gettin chunk tho should be alright?
when I've had nocturnals, turn light off, feed and then have a dim lamp behind you so you can just about see them without disturbing them with the light, worked for me.
A red light works great at night! You can see them, and it doesn't bother them. They don't like harsh lighting. If you give them alot of places to hide they will actually come out more if the lighting isn't too bright. They, like a lot of other fish, feel more comfortable if they feel secure. Security = hiding places.